To my agnostic friend
If you say you do not know anything about God
You are actually saying that you know something about God
How do you know that the thing that you do not know about God
Is actually not about God?
You have some idea about God already
And that is why you say that you do not know anything about God
Your idea about God is
Something or someone that is bigger than your comprehension
Or greater than the possibility of knowing
That is something that you already know about God
And that is a good start!